I have the Estim KIX Beginner Kit, you can read my full review here in which I describe my experience. I also make reference to a really good (free, no sign up) guide to pad placement for both penises and vulvas. I found it really helpful when I first started. Hope it helps 
@Nvravrg69 that guide will give you multiple ideas for effective pad placement with graphic cartoons to demonstrate (which is why I can’t link directly 
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